What Trammel Fossil Park Actually IsMost people drive past this place without a second glance, because from the road, it honestly looks like an industrial area. Trammel Fossil Park exists because the R.L. Visiting On A BudgetFree is a word that gets thrown around loosely, but Trammel Fossil Park genuinely charges no admission. For travelers passing through the Cincinnati area, Trammel Fossil Park remains one of the region’s most unusual free outdoor stops. That lasting sense of discovery is what makes Trammel Fossil Park worth writing about.